You've got to learn to crawl before you learn to run.

在你学会跑之前你得学会爬。

麻省理工公开课 - 固态化学导论课程节选

and kind of did like a bar crawl all over the city, so that was a lot of fun.

然后穿梭于城里不同的酒吧中，所以这非常有趣。

交新朋友的方法 - SpeakingMax英语口语达人

It could be the response is 'there's something dangerous in the environment, we got to move away', and so the response is for the cell to crawl in the opposite direction.

这个信号还有可能是,"外面很危险,我们得赶紧跑",于是细胞就向相反方向游走了

耶鲁公开课 - 生物医学工程探索课程节选

One of the first steps in that healing is that fibroblasts like this cell crawl into the space that's created by the wound and they grab a hold of both sides of the wound and contract and try to pull it together.

愈合的第一步是,成纤维细胞向,损伤的创口爬行,紧紧地抓住创口的两侧,通过收缩回拉 试着使创口合拢

耶鲁公开课 - 生物医学工程探索课程节选